CA2211751C - Process and installation for patterning a web of textile material - Google Patents
Process and installation for patterning a web of textile material Download PDFInfo
- Publication number
- CA2211751C CA2211751C CA002211751A CA2211751A CA2211751C CA 2211751 C CA2211751 C CA 2211751C CA 002211751 A CA002211751 A CA 002211751A CA 2211751 A CA2211751 A CA 2211751A CA 2211751 C CA2211751 C CA 2211751C
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- Canada
- Prior art keywords
- agent
- web
- patterning
- thickening
- residues
- Prior art date
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- Expired - Fee Related
Links
- 238000000059 patterning Methods 0.000 title claims abstract description 48
- 239000004753 textile Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims description 21
- 238000009434 installation Methods 0.000 title claims description 12
- 239000000463 material Substances 0.000 title description 3
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 83
- 239000002562 thickening agent Substances 0.000 claims abstract description 74
- 238000004140 cleaning Methods 0.000 claims abstract description 14
- 239000004744 fabric Substances 0.000 claims description 30
- 239000000975 dye Substances 0.000 claims description 16
- 239000000835 fiber Substances 0.000 claims description 16
- 239000011550 stock solution Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000007865 diluting Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000004043 dyeing Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 238000004513 sizing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 238000010014 continuous dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000009988 textile finishing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
- D06B23/20—Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Coloring (AREA)
Abstract
A textile web (1), for example, a carpet web, is provided with a patterning agent with thickening agent and subsequently steamed in a steamer (3). The agent residues remaining on the textile web (1) are at least partially removed by mechanical means, and cleaned and decolorized in a cleaning unit (10), leaving a virtually pure thickening agent which can be reused for preparing a new batch of patterning agent in the batching tank (18).
Description
The invention relates to a process and installation for patterning a web of textile fabric, in particular a carpet web.
Considered as "patterning" within the meaning of the invention is primarily colored patterning, in which context one should think not only of a true illustration [pattern], but of solid-shade dyeing as coming under the term, as well.
The manner in which the patterning means are applied is not important for the invention. In many cases, it will be a printing process, but processes also come into consideration where patterning means are applied by dropping, pouring or spraying them on, or where the web is even dipped into a patterning liquor.
The invention concerns processes of this type, where a thickening agent must be present on the web. This is primarily the case with printing processes to prevent the patterning agent from running, thus forming a clean contour, or to prevent the patterning agent from penetrating too quickly into the depth of the textile material. The use of thickening agents in textile printing is described in the book "Grundlagen der Textilveredlung" jFundamentals of Textile Finishing] by M. Peter and H. K. Rouette, 13th edition (1989), pages 620 to 623, and a number of suitable substances are enumerated. Of course, mixtures of several suitable substances must also be required as thickening agents.
In the case of printing, the thickening agents is in the applied medium, i. e., the printing paste. This also holds true when a thickening agent must be used in carpet dyeing to prevent the applied patterning agent from sinking too quickly into the pile, which in the case of carpets is quite high, thus assuring that the tips of the fibers receive enough dye, so that a frosting effect does not develop. The thickening agent added to the dyeing liquor in these cases also keeps the liquor on the top areas of the fibers for a sufficient time.
However, there are also cases when thickening agent is not applied together with the patterning agent, but is applied beforehand. An example for this can be gathered from the German Patent 27 08 000 A1, in which the thickening agent (gum) is used as a dye retardant and is applied in a coating on a carpet web, upon which a non-repeating pattern is subsequently dropped using dyeing liquors. However, even here, when the patterning is completed and the goods are in the steamer, thickening agents are present.
These thickening agents must be removed again Trom the web after the steaming process. This is a difficult task and requires considerable expenditure for washing. Many attempts have been made to facilitate the removal of the thickening agent. For example, the thickener has first been moistened, whereupon it has passed through a dwelling [soaking) section in order to let the thickener swell due to the moisture.
After that, it is supposed to be easier to wash out.
Until now, the washing expenditure to remove the thickener was always considerably greater than in the normal dyeing [process] where no thickening agents are necessary.
At the end of the steamer, the thickening agents form a true layer on the web, and it has also already beer, undertaken to mechanically remove this layer in the end region of the steamer by doctoring, so that at least a substantial portion of the thickening agent was already removed from the web without a washing process, and the washing process was relieved accordingly (German laid open print 34 40 948).
However, all these known measures were from the aspect of merely removing the thickening agent, which subsequently had to be disposed of in a costly manner.
A further step has been taken in the U. S. Patent 4,418,433 which discloses an installation for the continuous dyeing of carpets. In this case, the thickening agent is not only removed, but retrieved for repeated use. The removal is carried out by a suctioning-off process at the steamer outlet, thus where the dye is already absorbed into the fibers. The suctioned-off thickening agent is filtered and sent through a heat exchanger to regain the heat. The thickening agent thus treated is supplied again to the thickening-agent application device arranged before the application device for the dye liquor.
Thus, in this case, the stress is not on the mere removal of the thickener, but on its recovery and reuse in preparing a new batch of patterning agent. Therefore, the method has both an ecological aspect, in that the repeated use of the thickening agents substantially reduces the outlay for waste disposal, and an economic aspect, in that the repeated use of the expensive thickening agents yields a cost savings which amortizes the costs of the additional equipment in a relatively short time.
It may be so that in many color patternings, thus dyeings, in the case of metered liquor coating, 99~ and more of the dyestuffs contained in the patterning agent absorbs into the fibers, and already for that reason the agent residues, comprising quite predominantly the remnant thickening agent, remain almost colorless. Since, however, these dye residues can accumulate during the repeated use of the thickening agent, said thickening agent can take on a self color which can have an interfering effect.
The underlying object of the invention is to improve the patterning process of this type which works with thickening agents.
The invention provides a process for patterning a web of textile fabric, where patterning agent is applied on the web and thickening agent is added on the web, where the web provided with the patterning agent is guided through a steamer, where agent residues on the web are at least partially removed by mechanical means from said web, which still completely or substantially exhibits the temperature of the steamer, and where the removed agent residues are cleaned, without being diluted with water, and the virtually pure thickening agent then remaining is reused for preparing a new batch of patterning agent, characterized in that a decolorizing treatment follows the cleaning, during which the mechanically removed agent residues are applied onto a web-type, permeable fabric made of textile fibers, which are easily dyeable by the patterning dye, and are then sucked through the fabric, the dyes still contained in the thickening agent being transferred onto the fabric.
The invention also provides an installation for patterning a web of textile fabric, comprising: means for the continuous conveyance of the textile web in a lengthwise direction along a treatment section, an application device, by means of which patterning agent and thickening agent are able to be applied simultaneously or separately onto forward-moving web, a steamer arranged downstream of the application device in the treatment section, a device arranged in the area of steamer outlet for mechanically removing from web a sub-stantial portion of the agent residues containing thickening agent and for collecting and further conveying the removed agent residues, a device for cleaning the agent residues, without diluting them with water, to recover a virtually pure thickening agent, and a device for feeding back the reclaimed thickening agent to reuse it for preparing a new batch of patterning agent, characterized in that device for cleaning the removed agent residues has a decolorizing device which comprises an application device, by means of which the mechanically cleaned agent residues are able to be applied onto an advancing fabric made of textile fibers easily dyeable by the dyestuffs of the patterning agent, a suction device arranged downstream of the application area, by means of which the applied agent residues are able to be suctioned off through fabric, and a separator to separate the thicken-ing agent from the suctioned-off air stream.
To be understood as "agent residues" within the meaning of the invention is the totality of unbound substances on the web and its fibers, thus not only the residues of the applied patterning agent, but also the residues from processing agents applied in previous treatment steps, such as sizing, finishing and similar agents, which adhere to the fibers.
These constituents are less affected during the mechanical removal of the agent residues. They remain predominantly on the web and are first removed during the subsequent washing operation. Rather, the mechanically removable constituents contain mainly the residues of the patterning agent, such as the printing paste, that comprises predominantly the thicken-ing agent, and which in this manner is able to be separated from the unwanted processing agents, such as sizing and finishing agents, etc.
According to the invention, the accumulation of the dye in the thickening agent is counteracted by the decolorizing treatment, in which the mechanically cleaned agent residues 4a are applied, as in a dyeing process, with a suitable coating device on a web-type, permeable fabric made of textile fibers which are easily dyeable by the patterning dye. The fabric can be a woven fabric, or else a non-woven fabric made of the 4b textile fibers. The agent residues on the fabric are then sucked through said fabric, the dyestuffs still contained in the agent residues readily transferring onto the appropriately selected fabric fibers. Thus, the dyes still contained in the agent residues are, so to speak, "dyed away" out of them. A
virtually pure thickening agent remains which can be reused.
The fabric is either discarded, or is itself decolorized by a suitable process, to be usable again, if desired.
One important aspect of the procedure described is that both the removal of the thickening agent from the web and its cleaning are carried out without the aid of water, so that the retrieved thickening agent can be reused as is, without energy-costly water extraction.
The mechanical cleaning [process] upstream of the decolorizing [process] can be effected by screening or filtering as in the related art, the impurities such as lint and the like collected during the removal of the agent residues by mechanical means being removed from the material.
Claims 3 to 8 describe the invention in its embodiment pertaining to an apparatus.
The invention is illustrated schematically in the drawing, whose Figures show:
Figure 1: a view of the recovery section of a patterning installation;
Figure 2: a side view of a decolorizing device.
In the exemplary embodiment, the textile web denoted with 1 in Figure 1 is a carpet web which, at a location upstream of the [drawing] representation, has been provided with an application of a patterning agent containing thickening agents. In the exemplary embodiment, it is a thickened printing paste.
Thus, after the application of the patterning agent, the patterning agent and the thickening agent are present on web 1 at the same time. Web 1 enters in the direction of arrow 2 into a steamer 3 in which the dyes from the patterning agent absorb into the fibers of web 1. At the end of the run-through, this process is complete, and there remains on the web an agent residue which comprises small residues of dye, possible slight residues of another type and the entire thickening agent. Said thickening agent is found as a kind of coating on the pile side of the web when it is about to leave steamer 3 at outlet 4. Provided in this region of steamer 3 is a doctor blade 5 which wipes off web 1 and mechanically removes from the web a substantial portion of the agent residue on said web 1, for instance 50 to 70~, and collects it in a channel 6, from where it enters into a working tank 7 at outlet 4 of the steamer. The doctor blade or another mechanical removal device can also be arranged outside of the steamer, close to outlet 4.
The intention is not to thoroughly remove the agent residue remaining on the web. Contained in the agent residue is, namely, also residue from sizing agents, finishing agents and the like, which sits on the fibers and, to a lesser extent, in the area of the thickening agent located at the top on the pile. Mainly, these portions of the agent residue remain on web 1 during the wiping-off process and do not arrive in working tank 7 with the wiped-off portion of the agent residue. The unwanted components such as sizers, finishing agents and the like are washed out when web 1, after leaving steamer 3 at outlet 4, is transferred in the direction of arrow 8 into a washing installation not shown.
The wiped-off agent residue is transferred out of working tank 7 by means of a pump 9 into a cleaning device denoted as a whole with 10. Cleaning device 10 comprises two aggregates 11 and 12. The wiped-off agent residue arrives first of all in aggregate 11, which is a screen and filter unit for the removal of mechanical impurities such as lint and the like collected when wiping off web 1.
The mechanically precleaned agent residue then arrives in a decolorizing unit 12 which gets out from the agent residue the small portions of dye which were not absorbed into web 1 in steamer 3., but remained in said agent residue. Decolorizing unit 12 will be described in detail with the aid of Figure 2.
The medium leaving decolorizing unit 12 in conduit 13 can no longer be described as "agent residue", but comprises a virtually pure thickening agent which can be delivered into supply tank 14. Only one supply tank 14, as such, would be necessary. However, the quality of the thickening agent present in conduit 13 can fluctuate from yardage to yardage of web 1. Therefore, it is recommended to collect the thickening agent separately for each yardage. For this reason, three supply tanks 14 are provided in the exemplary embodiment, into which the thickening agent conveyed in conduit 13 can be selectively delivered.
Besides the three supply tanks 14, provision is also made for a tank 15 having thickening-agent stock solution, and from which said thickening-agent stock solution can be transferred by means of a pump 16 via a conduit 17 into a batching tank 18 ORIGINAL TRANSLATION
g for preparing further patterning agent, for example, further printing paste.
Alternatively or in addition, thickening-agent stock solution S can be transferred via conduit 20 selectively into one of the supply tanks 14 in order to adjust, in the necessary manner, the thickening agent located therein, whose quality can be different in the three supply tanks 14. This adjustment c~_-_ take place automatically, in that the properties of the thickening-agent quantities in the individual supply tanks _4 are measured by suitable measuring devices 21. The measure values are each fed via a line 22 to a controlling unit 40 which controls metering pump 16 in such a way that it supp_==s the thickening-agent stock solution to the individual supp=;
tanks l4.in the quantity needed in each case.
The thickening agent is selectively removed from the individual supply tanks 14 by means of a pump 24 via a conc-~_=
23 and fed to hatching tank 18 for preparing further patterning agent.
Figure 2 shows a relevant decolorizing unit 12. The quant-_=w of agent residue leaving screen and filter unit 11 is delivered via a supply tube 25 onto a horizontally guided section 30' of a web-type fabric 30 that represents a woven.
fabric, a knit fabric or a non-woven fabric made of fibers able to be dyed particularly easily by the dyestuffs coma;-~:
in the patterning agent for the carpet. In the exemplary embodiment shown, the fabric is reeled off a roller 26, conducted in the horizontal section 30' by way of a suppor roll 27 and a suction tube 28 effective over the width of fabric 30, and subsequently reeled again onto a roller 29.
The agent residue is delivered through supply tube 25 at a ORIGINAL TRANSLATION
location on the upper side of fabric 30 where it is supported on the back side by a sliding plate 31. The applied quantity of agent residue is smoothed out by means of a coating knife 32, arranged on the top side, to form a uniform coating 33 which, when passing the entrance of suction tube 28, is sucked through fabric 30 into said suction tube 28.
In this context, the small quantities of dye still contained in the agent residue transfer onto fabric 30, so that virtually colorless thickening agent comes out in conduit 34, said thickening agent being separated in separator 35 from the stream of suction air, so that thickening agent that is free of air arrives in conduit 13, from where it is further processed in the manner described in connection with Figure 1.
Considered as "patterning" within the meaning of the invention is primarily colored patterning, in which context one should think not only of a true illustration [pattern], but of solid-shade dyeing as coming under the term, as well.
The manner in which the patterning means are applied is not important for the invention. In many cases, it will be a printing process, but processes also come into consideration where patterning means are applied by dropping, pouring or spraying them on, or where the web is even dipped into a patterning liquor.
The invention concerns processes of this type, where a thickening agent must be present on the web. This is primarily the case with printing processes to prevent the patterning agent from running, thus forming a clean contour, or to prevent the patterning agent from penetrating too quickly into the depth of the textile material. The use of thickening agents in textile printing is described in the book "Grundlagen der Textilveredlung" jFundamentals of Textile Finishing] by M. Peter and H. K. Rouette, 13th edition (1989), pages 620 to 623, and a number of suitable substances are enumerated. Of course, mixtures of several suitable substances must also be required as thickening agents.
In the case of printing, the thickening agents is in the applied medium, i. e., the printing paste. This also holds true when a thickening agent must be used in carpet dyeing to prevent the applied patterning agent from sinking too quickly into the pile, which in the case of carpets is quite high, thus assuring that the tips of the fibers receive enough dye, so that a frosting effect does not develop. The thickening agent added to the dyeing liquor in these cases also keeps the liquor on the top areas of the fibers for a sufficient time.
However, there are also cases when thickening agent is not applied together with the patterning agent, but is applied beforehand. An example for this can be gathered from the German Patent 27 08 000 A1, in which the thickening agent (gum) is used as a dye retardant and is applied in a coating on a carpet web, upon which a non-repeating pattern is subsequently dropped using dyeing liquors. However, even here, when the patterning is completed and the goods are in the steamer, thickening agents are present.
These thickening agents must be removed again Trom the web after the steaming process. This is a difficult task and requires considerable expenditure for washing. Many attempts have been made to facilitate the removal of the thickening agent. For example, the thickener has first been moistened, whereupon it has passed through a dwelling [soaking) section in order to let the thickener swell due to the moisture.
After that, it is supposed to be easier to wash out.
Until now, the washing expenditure to remove the thickener was always considerably greater than in the normal dyeing [process] where no thickening agents are necessary.
At the end of the steamer, the thickening agents form a true layer on the web, and it has also already beer, undertaken to mechanically remove this layer in the end region of the steamer by doctoring, so that at least a substantial portion of the thickening agent was already removed from the web without a washing process, and the washing process was relieved accordingly (German laid open print 34 40 948).
However, all these known measures were from the aspect of merely removing the thickening agent, which subsequently had to be disposed of in a costly manner.
A further step has been taken in the U. S. Patent 4,418,433 which discloses an installation for the continuous dyeing of carpets. In this case, the thickening agent is not only removed, but retrieved for repeated use. The removal is carried out by a suctioning-off process at the steamer outlet, thus where the dye is already absorbed into the fibers. The suctioned-off thickening agent is filtered and sent through a heat exchanger to regain the heat. The thickening agent thus treated is supplied again to the thickening-agent application device arranged before the application device for the dye liquor.
Thus, in this case, the stress is not on the mere removal of the thickener, but on its recovery and reuse in preparing a new batch of patterning agent. Therefore, the method has both an ecological aspect, in that the repeated use of the thickening agents substantially reduces the outlay for waste disposal, and an economic aspect, in that the repeated use of the expensive thickening agents yields a cost savings which amortizes the costs of the additional equipment in a relatively short time.
It may be so that in many color patternings, thus dyeings, in the case of metered liquor coating, 99~ and more of the dyestuffs contained in the patterning agent absorbs into the fibers, and already for that reason the agent residues, comprising quite predominantly the remnant thickening agent, remain almost colorless. Since, however, these dye residues can accumulate during the repeated use of the thickening agent, said thickening agent can take on a self color which can have an interfering effect.
The underlying object of the invention is to improve the patterning process of this type which works with thickening agents.
The invention provides a process for patterning a web of textile fabric, where patterning agent is applied on the web and thickening agent is added on the web, where the web provided with the patterning agent is guided through a steamer, where agent residues on the web are at least partially removed by mechanical means from said web, which still completely or substantially exhibits the temperature of the steamer, and where the removed agent residues are cleaned, without being diluted with water, and the virtually pure thickening agent then remaining is reused for preparing a new batch of patterning agent, characterized in that a decolorizing treatment follows the cleaning, during which the mechanically removed agent residues are applied onto a web-type, permeable fabric made of textile fibers, which are easily dyeable by the patterning dye, and are then sucked through the fabric, the dyes still contained in the thickening agent being transferred onto the fabric.
The invention also provides an installation for patterning a web of textile fabric, comprising: means for the continuous conveyance of the textile web in a lengthwise direction along a treatment section, an application device, by means of which patterning agent and thickening agent are able to be applied simultaneously or separately onto forward-moving web, a steamer arranged downstream of the application device in the treatment section, a device arranged in the area of steamer outlet for mechanically removing from web a sub-stantial portion of the agent residues containing thickening agent and for collecting and further conveying the removed agent residues, a device for cleaning the agent residues, without diluting them with water, to recover a virtually pure thickening agent, and a device for feeding back the reclaimed thickening agent to reuse it for preparing a new batch of patterning agent, characterized in that device for cleaning the removed agent residues has a decolorizing device which comprises an application device, by means of which the mechanically cleaned agent residues are able to be applied onto an advancing fabric made of textile fibers easily dyeable by the dyestuffs of the patterning agent, a suction device arranged downstream of the application area, by means of which the applied agent residues are able to be suctioned off through fabric, and a separator to separate the thicken-ing agent from the suctioned-off air stream.
To be understood as "agent residues" within the meaning of the invention is the totality of unbound substances on the web and its fibers, thus not only the residues of the applied patterning agent, but also the residues from processing agents applied in previous treatment steps, such as sizing, finishing and similar agents, which adhere to the fibers.
These constituents are less affected during the mechanical removal of the agent residues. They remain predominantly on the web and are first removed during the subsequent washing operation. Rather, the mechanically removable constituents contain mainly the residues of the patterning agent, such as the printing paste, that comprises predominantly the thicken-ing agent, and which in this manner is able to be separated from the unwanted processing agents, such as sizing and finishing agents, etc.
According to the invention, the accumulation of the dye in the thickening agent is counteracted by the decolorizing treatment, in which the mechanically cleaned agent residues 4a are applied, as in a dyeing process, with a suitable coating device on a web-type, permeable fabric made of textile fibers which are easily dyeable by the patterning dye. The fabric can be a woven fabric, or else a non-woven fabric made of the 4b textile fibers. The agent residues on the fabric are then sucked through said fabric, the dyestuffs still contained in the agent residues readily transferring onto the appropriately selected fabric fibers. Thus, the dyes still contained in the agent residues are, so to speak, "dyed away" out of them. A
virtually pure thickening agent remains which can be reused.
The fabric is either discarded, or is itself decolorized by a suitable process, to be usable again, if desired.
One important aspect of the procedure described is that both the removal of the thickening agent from the web and its cleaning are carried out without the aid of water, so that the retrieved thickening agent can be reused as is, without energy-costly water extraction.
The mechanical cleaning [process] upstream of the decolorizing [process] can be effected by screening or filtering as in the related art, the impurities such as lint and the like collected during the removal of the agent residues by mechanical means being removed from the material.
Claims 3 to 8 describe the invention in its embodiment pertaining to an apparatus.
The invention is illustrated schematically in the drawing, whose Figures show:
Figure 1: a view of the recovery section of a patterning installation;
Figure 2: a side view of a decolorizing device.
In the exemplary embodiment, the textile web denoted with 1 in Figure 1 is a carpet web which, at a location upstream of the [drawing] representation, has been provided with an application of a patterning agent containing thickening agents. In the exemplary embodiment, it is a thickened printing paste.
Thus, after the application of the patterning agent, the patterning agent and the thickening agent are present on web 1 at the same time. Web 1 enters in the direction of arrow 2 into a steamer 3 in which the dyes from the patterning agent absorb into the fibers of web 1. At the end of the run-through, this process is complete, and there remains on the web an agent residue which comprises small residues of dye, possible slight residues of another type and the entire thickening agent. Said thickening agent is found as a kind of coating on the pile side of the web when it is about to leave steamer 3 at outlet 4. Provided in this region of steamer 3 is a doctor blade 5 which wipes off web 1 and mechanically removes from the web a substantial portion of the agent residue on said web 1, for instance 50 to 70~, and collects it in a channel 6, from where it enters into a working tank 7 at outlet 4 of the steamer. The doctor blade or another mechanical removal device can also be arranged outside of the steamer, close to outlet 4.
The intention is not to thoroughly remove the agent residue remaining on the web. Contained in the agent residue is, namely, also residue from sizing agents, finishing agents and the like, which sits on the fibers and, to a lesser extent, in the area of the thickening agent located at the top on the pile. Mainly, these portions of the agent residue remain on web 1 during the wiping-off process and do not arrive in working tank 7 with the wiped-off portion of the agent residue. The unwanted components such as sizers, finishing agents and the like are washed out when web 1, after leaving steamer 3 at outlet 4, is transferred in the direction of arrow 8 into a washing installation not shown.
The wiped-off agent residue is transferred out of working tank 7 by means of a pump 9 into a cleaning device denoted as a whole with 10. Cleaning device 10 comprises two aggregates 11 and 12. The wiped-off agent residue arrives first of all in aggregate 11, which is a screen and filter unit for the removal of mechanical impurities such as lint and the like collected when wiping off web 1.
The mechanically precleaned agent residue then arrives in a decolorizing unit 12 which gets out from the agent residue the small portions of dye which were not absorbed into web 1 in steamer 3., but remained in said agent residue. Decolorizing unit 12 will be described in detail with the aid of Figure 2.
The medium leaving decolorizing unit 12 in conduit 13 can no longer be described as "agent residue", but comprises a virtually pure thickening agent which can be delivered into supply tank 14. Only one supply tank 14, as such, would be necessary. However, the quality of the thickening agent present in conduit 13 can fluctuate from yardage to yardage of web 1. Therefore, it is recommended to collect the thickening agent separately for each yardage. For this reason, three supply tanks 14 are provided in the exemplary embodiment, into which the thickening agent conveyed in conduit 13 can be selectively delivered.
Besides the three supply tanks 14, provision is also made for a tank 15 having thickening-agent stock solution, and from which said thickening-agent stock solution can be transferred by means of a pump 16 via a conduit 17 into a batching tank 18 ORIGINAL TRANSLATION
g for preparing further patterning agent, for example, further printing paste.
Alternatively or in addition, thickening-agent stock solution S can be transferred via conduit 20 selectively into one of the supply tanks 14 in order to adjust, in the necessary manner, the thickening agent located therein, whose quality can be different in the three supply tanks 14. This adjustment c~_-_ take place automatically, in that the properties of the thickening-agent quantities in the individual supply tanks _4 are measured by suitable measuring devices 21. The measure values are each fed via a line 22 to a controlling unit 40 which controls metering pump 16 in such a way that it supp_==s the thickening-agent stock solution to the individual supp=;
tanks l4.in the quantity needed in each case.
The thickening agent is selectively removed from the individual supply tanks 14 by means of a pump 24 via a conc-~_=
23 and fed to hatching tank 18 for preparing further patterning agent.
Figure 2 shows a relevant decolorizing unit 12. The quant-_=w of agent residue leaving screen and filter unit 11 is delivered via a supply tube 25 onto a horizontally guided section 30' of a web-type fabric 30 that represents a woven.
fabric, a knit fabric or a non-woven fabric made of fibers able to be dyed particularly easily by the dyestuffs coma;-~:
in the patterning agent for the carpet. In the exemplary embodiment shown, the fabric is reeled off a roller 26, conducted in the horizontal section 30' by way of a suppor roll 27 and a suction tube 28 effective over the width of fabric 30, and subsequently reeled again onto a roller 29.
The agent residue is delivered through supply tube 25 at a ORIGINAL TRANSLATION
location on the upper side of fabric 30 where it is supported on the back side by a sliding plate 31. The applied quantity of agent residue is smoothed out by means of a coating knife 32, arranged on the top side, to form a uniform coating 33 which, when passing the entrance of suction tube 28, is sucked through fabric 30 into said suction tube 28.
In this context, the small quantities of dye still contained in the agent residue transfer onto fabric 30, so that virtually colorless thickening agent comes out in conduit 34, said thickening agent being separated in separator 35 from the stream of suction air, so that thickening agent that is free of air arrives in conduit 13, from where it is further processed in the manner described in connection with Figure 1.
Claims (8)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A process for patterning a web of textile fabric, where patterning agent is applied on the web and thickening agent is added on the web, where the web provided with the patterning agent is guided through a steamer, where agent residues on the web are at least partially removed by mechanical means from said web, which still completely or substantially exhibits the temperature of the steamer, and where the removed agent residues are cleaned, without being diluted with water, and the virtually pure thickening agent then remaining is reused for preparing a new batch of patterning agent, characterized in that a decolorizing treatment follows the cleaning, during which the mechanically removed agent residues are applied onto a web-type, permeable fabric made of textile fibers, which are easily dyeable by the patterning dye, and are then sucked through the fabric, the dyes still contained in the thickening agent being transferred onto the fabric.
2. The process as defined by claim 1, characterized in that the cleaning comprises a mechanical cleaning by screening and filtering to remove lint and the like.
3. An installation for patterning a web of textile fabric, comprising:
means for the continuous conveyance of the textile web in a lengthwise direction along a treatment section, an application device, by means of which patterning agent and thickening agent are able to be applied simultaneously or separately onto forward-moving web (1), a steamer (3) arranged downstream of the application device in the treatment section, a device (5,6,7) arranged in the area of steamer outlet (4) for mechanically removing from web (1) a substantial portion of the agent residues containing thickening agent and for collecting and further conveying the removed agent residues, a device (10) for cleaning the agent residues, without diluting them with water, to recover a virtually pure thickening agent and a device (13,14,23,24) for feeding back the reclaimed thickening agent to reuse it for preparing a new batch of patterning agent, characterized in that device (10) for cleaning the removed agent residues has a decolorizing device (12) which comprises an application device (25,32), by means of which the mechanically cleaned agent residues are able to be applied onto an advancing fabric (30) made of textile fibers easily dyeable by the dyestuffs of the patterning agent, a suction device (28) arranged downstream of the application area, by means of which the applied agent residues are able to be suctioned off through fabric (30), and a separator (35) to separate the thickening agent from the suctioned-off air stream.
means for the continuous conveyance of the textile web in a lengthwise direction along a treatment section, an application device, by means of which patterning agent and thickening agent are able to be applied simultaneously or separately onto forward-moving web (1), a steamer (3) arranged downstream of the application device in the treatment section, a device (5,6,7) arranged in the area of steamer outlet (4) for mechanically removing from web (1) a substantial portion of the agent residues containing thickening agent and for collecting and further conveying the removed agent residues, a device (10) for cleaning the agent residues, without diluting them with water, to recover a virtually pure thickening agent and a device (13,14,23,24) for feeding back the reclaimed thickening agent to reuse it for preparing a new batch of patterning agent, characterized in that device (10) for cleaning the removed agent residues has a decolorizing device (12) which comprises an application device (25,32), by means of which the mechanically cleaned agent residues are able to be applied onto an advancing fabric (30) made of textile fibers easily dyeable by the dyestuffs of the patterning agent, a suction device (28) arranged downstream of the application area, by means of which the applied agent residues are able to be suctioned off through fabric (30), and a separator (35) to separate the thickening agent from the suctioned-off air stream.
4. The installation as defined by Claim 3, characterized in that web-type fabric (30), unrolled from a wind-off roller (26), is conducted across a section (30') to a wind-up roller (29), and application device (25,32) and suction device (28) are connected [arranged] in series in section (30').
5. The installation as defined by one of Claims 3 or 4, characterized in that provision is made for a measuring device (21) for [measuring] the properties of the recovered thickening agent, and a supply tank (15) for thickening-agent stock solution which can be supplied in a regulated manner from said supply tank (15) to adjust the required thickening-agent properties when preparing a new batch of patterning agent.
6. The installation as defined by one of Claims 3 to 5, characterized in that the device for removing the agent residues by mechanical means comprises a doctor-blade arrangement (5) effective over the width of web (1) and acting upon said web (1) from the application side.
7. The installation as defined by one of Claims 3 to 5, characterized in that the device for removing the agent residues by mechanical means comprises a suction device effective over the width of web (1) and acting upon said web (1) from the application side.
8. The installation as defined by one of Claims 3 to 7, characterized in that device (10) for cleaning the removed agent residues comprises a lint screen and/or filter.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19503520A DE19503520C1 (en) | 1995-02-03 | 1995-02-03 | Pattern dyeing of carpetings, allowing repeated use of thickening agent |
| DE19503520.8 | 1995-02-03 | ||
| PCT/DE1995/001867 WO1996023923A1 (en) | 1995-02-03 | 1995-12-28 | Process for patterning a web of textile material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2211751A1 CA2211751A1 (en) | 1996-08-08 |
| CA2211751C true CA2211751C (en) | 2000-06-06 |
Family
ID=7753091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002211751A Expired - Fee Related CA2211751C (en) | 1995-02-03 | 1995-12-28 | Process and installation for patterning a web of textile material |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5968205A (en) |
| EP (1) | EP0803002B1 (en) |
| JP (1) | JP2816599B2 (en) |
| CA (1) | CA2211751C (en) |
| DE (2) | DE19503520C1 (en) |
| WO (1) | WO1996023923A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010070871A (en) * | 2001-06-15 | 2001-07-27 | 이석수 | Method for spray dyeing a fiber using an oil and water repellent |
| DK1288365T3 (en) * | 2001-08-22 | 2004-03-15 | Halbmond Teppichwerke Gmbh | Process for recycling thickening agent by printing on textile material webs |
| KR100921983B1 (en) | 2008-03-05 | 2009-10-14 | 송용문 | Apparatus and method for forming discoloration pattern on fabric |
| CN107503061B (en) * | 2017-08-31 | 2020-10-09 | 杭州依翰丝绸文化创意有限公司 | Energy-saving and environment-friendly steamer |
| CN108867011B (en) * | 2018-09-04 | 2023-07-14 | 浙江工业职业技术学院 | A waste cloth recycling device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1070405B (en) * | 1976-02-25 | 1985-03-29 | Rca Corp | METHOD AND APPARATUS FOR DYEING TEXTILE MATERIALS |
| US4418433A (en) * | 1981-08-07 | 1983-12-06 | Diamond Carpet Mills, Incorporated | Method and system for reclaiming and recycling gum and water in a carpet dyeing process |
| DE3440948A1 (en) * | 1984-11-09 | 1986-05-15 | Vepa AG, Riehen, Basel | Process and apparatus for washing printed material webs |
-
1995
- 1995-02-03 DE DE19503520A patent/DE19503520C1/en not_active Expired - Lifetime
- 1995-12-28 EP EP95942649A patent/EP0803002B1/en not_active Expired - Lifetime
- 1995-12-28 US US08/894,894 patent/US5968205A/en not_active Expired - Fee Related
- 1995-12-28 JP JP8523147A patent/JP2816599B2/en not_active Expired - Fee Related
- 1995-12-28 CA CA002211751A patent/CA2211751C/en not_active Expired - Fee Related
- 1995-12-28 WO PCT/DE1995/001867 patent/WO1996023923A1/en not_active Ceased
- 1995-12-28 DE DE59505337T patent/DE59505337D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0803002B1 (en) | 1999-03-10 |
| JPH10500742A (en) | 1998-01-20 |
| US5968205A (en) | 1999-10-19 |
| CA2211751A1 (en) | 1996-08-08 |
| WO1996023923A1 (en) | 1996-08-08 |
| EP0803002A1 (en) | 1997-10-29 |
| DE19503520C1 (en) | 1996-04-25 |
| DE59505337D1 (en) | 1999-04-15 |
| JP2816599B2 (en) | 1998-10-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |